view_item.php File Reference

Display information associated with a document. More...

Go to the source code of this file.

Functions
	view_item ($smarty, $INPUT, $db)
	Display information associated with a document.

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Detailed Description

Display information associated with a document.

Definition in file view_item.php.

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Function Documentation

view_item	(	$	smarty,
		$	INPUT,
		$	db
	)

Display information associated with a document.

Parameters:

	$smarty	-- Smarty template engine handle
	$db	-- SQL database handle
	$INPUT['mode']	-- determine the type of information to be displayed

Using mode == 'opac', you can redirect the user to the document's entry in the library catalogue. If mode == 'view', any attachments of the document are shown.

If there are several documents attached to the document, an index is shown from which the user can choose.

If the document is protected, access is granted only after the user enters the collection's password.

Definition at line 32 of file view_item.php.

References $actions_info, do_template(), get_file(), guess_mime_type(), list_files(), redirect(), and sql_query().

                                        {
global $_SESSION, $opac_url, $debug_level, $actions_info;

$default = array(
        "mode" => "view",
);

## check user input 

$INPUT = array_merge($default, $INPUT);

#if (isset($_SESSION['mode'])) {
#       $INPUT['mode'] = $_SESSION['mode'];
#}

if ($debug_level > 10) {
         print "<hr><pre>Input: ";
        print_r($INPUT);
        print "</pre><hr>";
}

if (!empty($errors)) {
        user_error("Missing or malformed input parameter(s): " . 
                join($errors, ", "), E_USER_ERROR); 
}


# init mysql connection

$param = array ( "tables" => "document, collection", 
                 "columns" => "document.*,collection.password",
                 "cond" => "collection.id = document.collection_id AND document.id = " . $INPUT['document_id'], 
                );

$document = sql_query('select', $param, $db);


if (empty($document)) {
        user_error("No such record: document id = " . $INPUT['document_id'],
                E_USER_ERROR); 
}

$m = $document[0];

$ok = FALSE;
$url = '';
$file = '';
$dir = FALSE;

switch($INPUT['mode']) {

        case 'opac': 
                $ok = TRUE;
                $url = $opac_url . $m['ppn'];
                break;

        default:
                $ok = ($m['protected'] == FALSE);

                if ($INPUT['file'] != '') {
                        $file = $INPUT['file'];
                } else if ($m['url'] != '') {
                        $url = $m['url'];
                } else {
                        $dir = TRUE; $ok = TRUE;
                };

                break;
}

if ((!$ok) and (isset($INPUT['password'])) and (isset($INPUT['b_ok']))) {

        # check password 

        sleep(2);
 
        $pw = "{SHA1}" . sha1($INPUT['password']);
        $ok = ($m['password'] == $pw);

        $INPUT['wrongpass'] = TRUE;
}

if ($ok) {

        if ($dir) {
                $ls = list_files($INPUT['item'], $INPUT['document_id']);


                if (count($ls) > 1) { 

                        $tpl_var = $INPUT;
                        $tpl_var['files_info'] = $ls;
                        $tpl_var['actions_info'] = $actions_info;
                        do_template( $smarty, 'view_dir.tpl', $tpl_var );
                        exit(0);
                }
        
                if (count($ls) == 1) {

                        $files = array_keys($ls);

                        $url = 'action.php?action=view&mode=file&item=' . 
                                $INPUT['item'];
                        $url .= '&document_id=' . $INPUT['document_id'];
                        $url .= '&file=' . $files[0];
                }
        }
                
        if ($file != '') {

                # file

                $mime = guess_mime_type($file);

                
                header('Content-Type: ' . $mime);

                if (($mime == 'application/octet-stream') ) {
                        header('Content-Disposition: $mime ; filename="' . $file . '";');
                }

                $c = get_file($INPUT['item'], $INPUT['document_id'], $file);
                echo $c;
                exit(0);
        } 


        if ($url != '') {

                # url

                redirect($url); 
                exit(0);
        }


} else {
        $tpl_var = $INPUT;
        do_template( $smarty, 'view.tpl', $tpl_var );
        exit(0);
}

}

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